Akkaisrokemeett of exhaust-pipes in locomotive-engines



"To all 'whom t may concern:I

` called UNITED sTATEs PATENT OEEIOE.

y `JOHN WILLIAMS, OE DUNKIRK; NEW YORK.

AEEANGEMENT E EXHAUsT-PIPEs IN LoooIvIoTIvE-ENGINES.

Specication of Letters Patent No. 12,495, dated March `6, 1855.

. Be it `knownthat I, "JOI-IN WILLIAMS, of Dunkirk,` inthe county of vChautauqua and """State of New York, have invented a new and useful Improvement in` Locomotives, cIlVilliams Steam-Generator and Fuel`-Saver and I do herebydeclare that p `the following is a full, clear, and exact descri tion of thesame" reference bein made to the accompanying" drawings, making `a part of this` specifica'tion The nature of my" invention consists in `creating a draft through the lower flueso-f the boiler by theinterposition of a curtain, p consisting of two cylinders surroundingthe escape or exhaust pipes and Wings b, Y).

placed in the smoke arch by which `the draft is directed more perfectly through these fines, and thus a fire or flue draft produced in them;.I also by `my improvement am'enfabled to enlarge the escape or exhaust pipes onethird, without the loss ofthe draft necessarilyrequired, or lo-ss of power of the e engine, as heretofore; producingat the same time a saving ofV fuelby thus throwingthe draft throughthe lower flues and keeping them clear of ashes` soo-t &c.

The machine is constructed of'sheet iron asfollows; first a cylinder a, a,\the.front` part or that toward the head light ofthe @engine resting on the bottom part of the `smoke arch-*reaching in height two or three A inches` above the top row of flues` in the boiler; theback part of cylinder a a. or that facing the fires is removed or left open `at `the bottom as shownin the drawing Fig. 3;

\ The lower edge ofa, is turned forming Ka bell `uiouth, While" inthe upper part holes of an inch diameter are made varying in number according to the size of the locomotive. 2d, on the right and left sides of the cylinder and sustaining itare Wings or curtains b b extending to the sides of the smoke i arch, and in height varying according to the size of locomotive. 3d, in the inside of aforesaid oval cylinder a a, is placed a smaller one cl, also oval and slightly conical affixed to the outer cylinder by braces, as shown in the drawing. These cylinders `thus constructed and connected are placed in the center o-f the smoke arch and around the` exhaust pipes e e as shown in drawing.

By my improvement I am enabled to enlarge the ends of the exhaust pipes one third more than as at present used in locomotives and thus reduce the resistance upon the escape side of the piston; this is important in the rapid motion of a locomotive, where the pressure of the steam in the blast pipes Surrounding the exhaust pipes e, e, with cylinders a,-and the outer ,one connected by wings 19,6, with the sides of the smoke arch, for the purposes of economizing fuel, and power of the engine as well as' equalizing. the draft through the lower flues of th boiler, substantially as set forth.

In testimony whereof I have signed my name before two subscribing Witnesses.

JOHN WILLIAMS.

Witnesses:

F. C. FORD, y Hr CLARKE. 

